The file-location package

[Tags:bsd3, library, test]

Common debugging/error/exception functions that give file location information

$(err "OH NO!")
main:Main main.hs:16:1 OH NO!

Notice how it displays package:module file:line:character

It exposes the functions err (error), undef (undefined), and trc (Debug.Trace.trace). All of these behave the same as their normal counterpart but also spit out a location.

Here is my favorite helper, debug, which is like trace but just show the value.

debug [1,2,3]
DEBUG: [1,2,3]

And The Template Haskell version.

$(dbg) [1,2,3]
DEBUG main:Main main.hs:1:3 [1,2,3]

Also there is a version of thrwIO that gives location information

($(thrwIO) $ AException) catch e -> putStrLn ("Caught " ++ show (e :: AException))
Caught AException "main:Main test/main.hs:25:6"

See module for a listing of all the functions with short descriptions, and the homepage for some more examples


Versions 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.3.0, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.4.5,,,, 0.4.6, 0.4.7,, 0.4.8, 0.4.9,
Dependencies base (==4.*), containers, template-haskell, transformers (==0.2.*) [details]
License BSD3
Author Greg Weber
Category Development
Home page
Source repository head: git clone
Uploaded Sun Feb 5 00:02:28 UTC 2012 by GregWeber
Distributions Debian:0.4.9, NixOS:
Downloads 5427 total (60 in the last 30 days)
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Status Docs uploaded by user
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